Arrangement of seats for an aircraft cabin

ABSTRACT

An arrangement of individual seats for passengers in an aircraft, comprising a plurality of seats which can be converted into beds and disposed in rows, and comprising two lateral groups ( 3   a;    13   a ) of two contiguous rows, each group being disposed along a wall ( 4 ) of the aircraft fuselage, and at least one central group ( 3   b;    13   b ) of two contiguous rows, the said central group being separated from each of the lateral groups by a gangway. Each lateral group comprising, between two consecutive groups in a first row, and a pitch (P1) able to allow transverse passage for the passengers in the other row. The at least one central group comprising, between two adjacent seats in the same row, and a pitch (P2) less than the pitch provided in the lateral groups.

The invention concerns an arrangement of individual seats for passengers in an aircraft and more particularly an arrangement of seats comprising a plurality of seats which can be converted into beds and disposed in rows, each row extending in the longitudinal direction of the vehicle, and each seat being oriented towards the front of the aircraft.

In aircraft cabins in which the seats can be converted into beds, the arrangement of the said seats must take account of several criteria: it is in fact necessary to provide the passengers not only with a high level of comfort but also optimum safety conditions, whilst providing a sufficient number of seats per cabin to meet the economical requirements related to this type of transport.

Arrangements of seats are already known which can be converted into beds, for aircraft cabins, in which the seats are disposed in several longitudinal rows. These arrangements provide a central group and two lateral groups of rows situated in each side of the central group, the central group being separated from the two lateral groups respectively by a gangway. However, in this type of arrangement, the passengers who are situated at a distance from a gangway are obliged, in order to gain access to the said gangway, to step over their neighbour if the latter has placed his seat in the bed position. This type of arrangement is therefore not very satisfactory in terms of comfort, but also in terms of safety, if for example the passengers have to go quickly to the emergency exits.

To resolve these drawbacks, the invention proposes an arrangement of seats for a transport vehicle which provides both the comfort and security of passengers, whilst providing a number of places in accordance with the economic requirements related to the type of transport concerned.

To this end, the object of the invention is an arrangement of individual seats for passengers in an aircraft, comprising a plurality of seats which can be converted into beds and disposed in rows, each row extending in the longitudinal direction of the aircraft, and each seat being oriented towards the front of the aircraft, characterised in that it comprises:

two lateral groups of two contiguous rows, each group being disposed along a wall of the aircraft fuselage, the seats in one row being offset longitudinally with respect to the seats in the other row, and

at least one central group of two contiguous rows, the seats in one row being offset longitudinally with respect to the seats in the other row, the said central group being separated from each of the lateral groups by an gangway;

each lateral group comprising, between two consecutive seats in a first row, a pitch able to allow transverse passage to a gangway for the passengers in the second row, when the corresponding seat in the first row is in the bed position, and at least one central group comprising, between two consecutive seats in the same row, a pitch less than the pitch provided in the lateral groups.

Such an arrangement has the advantage of avoiding all the passengers stepping over the adjacent passenger in order to reach the gangway when the seat of the other passenger is placed in the bed position. In addition, this arrangement preserves the privacy of each passenger and thus improves his comfort appreciably.

In addition, the gap between the seats is different according to the row in order to optimise the number of seats disposed in the cabin. The lateral groups of rows have sufficient gap to allow the passage of a user between two seats in the bed position, whilst the central groups have a lesser gap because all the occupants of the seats in these rows have access to a gangway.

In a particular embodiment, the seat arrangement according to the invention comprises two central groups, separated from one another by a gangway.

According to this embodiment, the presence of three gangways appreciably improves the circulation of passengers in the cabin.

Also in a particular embodiment, each seat is provided with a back rest adjustable for inclination, a squab adjustable for inclination, a leg rest adjustable for inclination and a fixed separation shell substantially in an S shape, the said shell comprising a first transverse wall extending behind the back rest of the said seat, a second transverse wall extending in front of the adjacent seat in the contiguous row, and a longitudinal wall extending between the two transverse walls.

A space can also be provided between two consecutive seats on the rows disposed along a wall of the aircraft fuselage.

Other objects and advantages of the invention will emerge during the following description, given with reference to the accompanying drawings, in which:

FIG. 1 is a schematic plan view of part of an aircraft cabin, comprising an arrangement of seats according to the invention; and

FIG. 2 is a view to a larger scale of the detail II in FIG. 1.

FIG. 3 is a view similar to FIG. 1 of another embodiment.

The arrangement of seats depicted in FIG. 1 is intended for aircraft of the long haul type. It comprises a plurality of seats 1 which can be converted into beds, disposed in eight parallel rows 2, each row 2 extending in the longitudinal direction of the aircraft, that is to say from front to rear.

The rows 2 of seats are grouped in pairs, so as to form four parallel groups 3, namely two lateral groups 3 a, close to the walls of the aircraft, and two central groups 3 b. Each group 3 is separated from an adjacent group by a gangway 5. Three gangways 5 are therefore provided in the cabin: one between each lateral group 3 a and the adjacent central group 3 b, and a gangway between the two central groups 3 b.

In addition, in each group 3 of two rows, the seat in a first row 2 a and the adjacent seat in the second row 2 b are offset longitudinally with respect to one another.

In the example depicted, the two lateral groups 3 a of rows comprise a transverse passage 6 provided between two adjacent seats in a first row 2 a, this passage 6 being arranged to allow passage of the passenger in the adjacent seat in the second row 2 b, in particular when the said seat is in the bed position. The longitudinal pitch of the seats is here equal to P1.

On the other hand, the two central groups 3 b of rows do not comprise any transverse passage. The longitudinal pitch of the seats is then equal to P2, less than P1.

According to the embodiment depicted, the passengers situated against the walls 4 of the aircraft can therefore leave their place using the passage 6, and all the other passengers have access directly to one or other of the gangways 5 either to their right or to their left.

The seats 1 are provided with a back rest, a squab and a leg rest, all adjustable for inclination. They also comprise a fixed separation shell disposed behind the back rest, referred to as the rear fixed separation shell.

The fixed shell is here substantially in the shape of an S, comprising a first transverse wall 7 extending behind the back rest of the said seat, a second transverse wall 8 extending in front of the seat adjacent to the contiguous row, and a longitudinal wall 9 extending between the two transverse walls.

The seats 1 are arranged so that, in the bed position, the leg rest of the seat is disposed under the fixed shell of the adjacent seat in the longitudinal direction, referred to as the front fixed separation shell.

In particular, such seats can be in accordance with those which are the subject of the patent FR-2 820 400, in which the movements of each of the elements are independent of each other and the fixed separation shells, and in which control means enable the seat to adopt, between a straight take-off and landing position of the seat and an elongated position of the seat, all the positions allowed by the space lying between the front fixed separation shell and the rear fixed separation shell.

In the embodiment in FIG. 2, a single central group 13 b of two rows of seats is provided, identical to one of the groups 13 a in FIG. 1. The lateral groups 3 a are identical to those in FIG. 1.

As before, the pitch P1 of the seats in the lateral group 13 a is greater than the pitch P2 of the seats in the central group 13 b.

The seats can be of the same type as those described with reference to FIG. 1.

It will be noted that, in the two embodiments depicted, a space 15 such as the passages 6 is provided longitudinally between two consecutive seats in the rows adjacent to a wall of the fuselage of the aircraft. These spaces 15 can for example be provided in storage units. 

1. An arrangement of individual seats for passengers in an aircraft, comprising a plurality of seats which can be converted into beds and disposed in rows, each row extending in the longitudinal direction of the aircraft, and each seat being oriented towards the front of the aircraft, characterized in that it comprises: two lateral groups (3 a; 13 a) of two contiguous rows (2), each group being disposed along a wall (4) of the aircraft fuselage, the seats in one row being offset longitudinally with respect to the seats in the other row, and at least one central group (3 b; 13 b) of two contiguous rows, the seats in one row being offset longitudinally with respect to the seats in the other row, the said central group being separated from each of the lateral groups by an gangway; each lateral group comprising, between two consecutive seats in a first row, a pitch (P1) able to allow transverse passage for the passengers in the second row, and at least one central group comprising, between two consecutive seats in the same row, a pitch less than the pitch provided in the lateral groups.
 2. An arrangement according to claim 1, characterized in that it comprises two central groups, separated from one another by a gangway.
 3. An arrangement according to claim 1, characterized in that each seat is provided with a back rest adjustable for inclination, a squab adjustable for inclination, a leg rest adjustable for inclination and a fixed separation shell substantially in an S shape, the said shell comprising a first transverse wall (7) extending behind the back rest of the said seat, a second transverse wall (8) extending in front of the adjacent seat in the contiguous row, and a longitudinal wall (9) extending between the two transverse walls.
 4. An arrangement according to claim 3, characterized in that the seats are arranged so that, in the bed position, the leg rest of a seat is disposed under the fixed shell of the adjacent seat in the longitudinal direction.
 5. An arrangement according to claim 1, characterized in that, on the rows disposed along a wall of the aircraft fuselage, a space (15) is provided between two consecutive seats. 